Meaning Of The Word Corundum

Real Dictionary
  1. Real Dictionary
  2. C Words Definitions
  3. Section C-522
  4. Corundum

What's the definition of Corundum? Find Corundum meanings, definitions and more at the Real Dictionary online.

Corundum Meaning

Corundum Definition
Corundum Definition

What's The Definition Of Corundum?

corundum in American English
a very hard mineral, aluminum oxide, Al2O3: a dark, coarse variety (emery) is used for grinding and polishing; clear, transparent varieties (ruby, sapphire) are used as gems
noun: a common mineral, aluminum oxide, Al2O3, notable for its hardness: transparent varieties, as sapphire and ruby, are used as gems, other varieties as abrasives: often made synthetically

corundum in British English
noun: a white, grey, blue, green, red, yellow, or brown mineral, found in metamorphosed shales and limestones, in veins, and in some igneous rocks. It is used as an abrasive and as gemstone; the red variety is ruby, the blue is sapphire. Composition: aluminium

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